Application of metallization patterns to glass

Metallization patterns are applied to the selection plates of the Zeus panel to be able to direct the electrons through the substructure to the proper colour pixel at the phosphor screen. The patterns, which also partially cover the insides of the holes in the selection plates, are applied using a subtractive process with either vacuum-deposited aluminium or wet-chemically applied silver. Different options for the lithographic resist are discussed, i.e. a cataphoretic negative resist and a sprayed positive resist. Satisfactory results have been obtained with both options. Adhesion of the metal to glass has been accomplished by application of a chromium adhesion layer in the case of the vacuum-deposited metal and by mechanical anchoring in the case of the wet-chemically applied metallization.